4R70W to a 302

[explorerjoe61]

I'm wanting to put a old school 302 in my explorer. will a pre- '86 302 mate to a 4R70W transmission? If anyone knows or has any info please let me know.

 

[Spdrcer34]

Short answer is YES. If the transmission is from a Windsor equipped vehicle. They also made the 4R70W in the Modular Bolt pattern also.

But the bigger question becomes; How are you going to control it? The 4R70W needs a computer to control it. You can accomplish the same thing, with out a computer with an AOD....which is basically what the 4R70W is...it's a Wide Gear Set, Electronically controlled version of the AOD....

Ryan

 

[explorerjoe61]

Duh!!

Thank you....I know that, just didn't dawn on me. I feel like a moron....was just trying to keep from replacing tranny and all.....well I guess the tranny has got to go!! Much Appreciated!

 

[n2epv]

And what about fuel delivery? I assume the 302 you have in mind has a carburetor - the 62 PSI from your tank-mounted fuel pump will be way too much.

I'm not trying to give you a hard time on this, but really to offer advice... If you have cheap or free access to that 302, it can be made to work. But if it's an 80's vintage smog motor, your truck might not go any faster than the 4.0 FI engine that you are taking out.

I remember the 'bad old days' of 80's vintage cars and trying to get them to run right. And the crappy automatics that were tweeked for maximum MPG (and maximum neck-jerking on shifts).

I have '94 and '97 Ford V8's in the driveway. Both have over 175,000 miles each (plus all the emissions equipment) and both run like new cars. My advice - find a 302 wrecked Explorer and transplant the drivetrain, wiring harness and computer.

 

[section525]

Baumann Engineering makes a stand-alone 4r70w controller. You're golden there. But yeah, why not stay EFI?